Elon Musk lashed out against “phony social justice warriors” on Wednesday after Tesla was booted from a key stock index that tracks sustainable and socially conscious companies. The mogul’s rage came after Tesla was removed from the S&P 500 ESG index, a list of companies that ratings agency S&P Global believes are making “meaningful and measurable sustainability-focused enhancements.” ESG stands for “environmental, social and governance.” About $65 billion is indexed or benchmarked to the S&P ESG index, compared to more than $13 trillion for the overall S&P 500 — which includes Tesla — according to Barron’s.Tesla were trading down 6.1%...